IR magnetotransmission in double NdBaMn2O6 manganite with different degrees of ordering in A-position

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Resumo

The structural, magnetic, and optical properties of double manganites NdBaMn2O6 have been studied depending on the degree of ordering of Nd and Ba atoms in the A-position. Analysis of temperature dependences of light transmission shows the changes of charge carrier subsystem in vicinity of structural and magnetic phase transitions. When the metal-insulator transition occurs the effect of light magnetotransmission near Curie temperature was found.

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Sobre autores

E. Mostovshchikova

Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences

Autor responsável pela correspondência
Email: mostovsikova@imp.uran.ru
Rússia, Ekaterinburg, 620108

E. Sterkhov

Institute of Metallurgy of Ural Branch of Russian Academy of Sciences

Email: mostovsikova@imp.uran.ru
Rússia, Ekaterinburg, 620016

S. Pryanichnikov

Institute of Metallurgy of Ural Branch of Russian Academy of Sciences

Email: mostovsikova@imp.uran.ru
Rússia, Ekaterinburg, 620016

S. Titova

Institute of Metallurgy of Ural Branch of Russian Academy of Sciences

Email: mostovsikova@imp.uran.ru
Rússia, Ekaterinburg, 620016

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2. Fig. 1. Diffractograms of NdBaMn2O6 manganites at room temperature. Arrows indicate BaMnO3 peaks. The inset shows the low-angle part of the diffractogram for Nd-o.

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3. Fig. 2. Temperature dependences of the lattice parameters of manganite Nd-o (a), Nd-m (b). Light symbols correspond to the high-temperature phase, dark symbols to the low-temperature phase.

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4. Fig. 3. Temperature dependences of magnetization of NdBaMn2O6 manganites in a field of 100 Oe (a). Light symbols correspond to the FC mode, dark symbols – to the ZFC mode. The inset shows the high-temperature peak for Nd-o on an enlarged scale. Field dependences of magnetization of Nd-m at different temperatures (b).

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5. Fig. 4. Temperature dependences of light transmission, normalized to transmission at 350 K, for Nd-o (a, b), Nd-m (c) and Nd-l (d), measured at different energies.

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6. Fig. 5. Temperature dependences of the light magnetotransmittance of Nd-m (a), Nd-l (b) manganite samples in a magnetic field of 8 kOe, measured at different energies. The inset shows the dependence of the magnetotransmittance on the energy of electromagnetic radiation.

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